Battery monomer bracket, battery module and battery pack

Abstract

The present disclosure provides a battery cell holder, a battery module, and a battery pack capable of accommodating battery cells of a plurality of types of sizes without spending cost. The present disclosure is a battery cell holder provided with a housing part for housing a cylindrical battery cell, the housing part comprising: a first housing part which is a cylindrical space having a first diameter; and a second housing part which is a cylindrical space having a second diameter smaller than the first diameter, the battery cell holder having a shape in which the outer periphery of the first housing part and the outer periphery of the second housing part are partially combined in plan view.

Description

Technical Field

[0001] The present disclosure relates to a battery cell bracket, a battery module, and a battery pack. Background Art

[0002] Conventionally, a battery module mounted on a vehicle or the like uses a battery cell holder capable of holding a plurality of battery cells.

[0003] For example, Patent Document 1 discloses a battery cell holder including a plurality of cylindrical accommodation portions corresponding to the sizes of cylindrical battery cells.

[0004] Prior art literature

[0005] Patent Literature

[0006] Patent Document 1: Japanese Patent Application Laid-Open No. 2022-61466. Summary of the Invention

[0007] Problems to be solved by the invention

[0008] Generally, battery modules come in a variety of sizes depending on capacity and usage. However, in the battery cell holder disclosed in Patent Document 1, since all the receiving sections have the same size, only one size of battery cells can be accommodated.

[0009] Therefore, when using a plurality of types of battery cells having different diameters, it is necessary to redesign and manufacture a cell holder having a housing portion corresponding to each diameter, which leads to a problem of high costs.

[0010] Solutions to the Problem

[0011] A battery cell holder in one form of the present disclosure includes a housing portion for accommodating a cylindrical battery cell, the housing portion comprising: a first housing portion, which is a cylindrical space having a first diameter; and a second housing portion, which is a cylindrical space having a second diameter smaller than the first diameter. When viewed from above, the battery cell holder has a shape that is a partial combination of the outer periphery of the first housing portion and the outer periphery of the second housing portion.

[0012] A battery module according to one aspect of the present disclosure includes the battery cell holder according to one aspect of the present disclosure.

[0013] A battery pack according to one aspect of the present disclosure includes the battery module according to one aspect of the present disclosure.

[0014] Effects of the Invention

[0015] According to the present disclosure, battery cells of various sizes can be accommodated without increasing costs. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 is a perspective view of a single-body bracket according to an embodiment of the present disclosure.

[0017] Figure 2 is a top view of a single-piece bracket according to an embodiment of the present disclosure.

[0018] Figure 3 1 and 2 are a plan view and a cross-sectional view of a container according to an embodiment of the present disclosure.

[0019] Figure 4 These are a plan view and a cross-sectional view of a housing portion when housing a small unit according to an embodiment of the present disclosure.

[0020] Figure 5 These are a plan view and a cross-sectional view of a housing portion when a macromonomer is housed in an embodiment of the present disclosure.

[0021] Figure 6 It is a top view of the accommodation portion according to the first modification of the present disclosure.

[0022] Figure 7 These are a plan view and a cross-sectional view of a housing portion according to a second modification of the present disclosure.

[0023] Figure 8 These are a plan view and a cross-sectional view of a housing portion when a small unit is housed according to a second modification of the present disclosure.

[0024] Figure 9 These are a plan view and a cross-sectional view of a housing portion when a macromonomer is housed according to Modification 2 of the present disclosure.

[0025] Figure 10 These are a plan view and a cross-sectional view of a housing portion according to a third modification of the present disclosure.

[0026] Figure 11 These are a plan view and a cross-sectional view of a storage portion when a small unit is stored in Modification 3 of the present disclosure.

[0027] Figure 12 These are a plan view and a cross-sectional view of a housing portion when a macro-unit is housed according to a third modification of the present disclosure.

[0028] Figure 13 It is a top view of a single-body bracket according to a third modification of the present disclosure.

[0029] Description of Reference Numerals

[0030] 1 Housing

[0031] 2 covers

[0032] 3 bottom

[0033] 4, 9 accommodating part

[0034] 5. First accommodating portion

[0035] 6 Second accommodating portion

[0036] 7Small size battery cells (small cells)

[0037] 8 large-sized battery cells (large cells)

[0038] 100 battery cell bracket DETAILED DESCRIPTION

[0039] Below, refer to Figure 1-Figure 5 A battery cell holder 100 according to an embodiment of the present disclosure will be described.

[0040] The battery cell holder 100 of the present embodiment is a component for holding a plurality of battery cells in a battery module.

[0041] First, use Figure 1 and Figure 2 The structure of the battery cell holder 100 will be described. Figure 1 It is a perspective view of the battery cell holder 100 . Figure 2 1 is a top view of the battery cell holder 100 .

[0042] like Figure 1 As shown in FIG. 1 , the battery cell holder 100 comprises: a rectangular parallelepiped housing 1 with an open upper surface; and a flat plate-shaped cover 2 covering the upper surface of the housing 1. Figure 1 In the figure, a part of the side surface of the housing 1 and a large part of the cover 2 are omitted.

[0043] The bottom surface 3 of the housing 1 is provided with a housing 4 for housing a cylindrical (an example of a columnar) battery cell. Figure 1 For the sake of convenience, only one receiving portion 4 is shown, but in fact, Figure 2 As shown in FIG. 1 , a plurality of receiving portions 4 are provided along the length direction (direction of arrow a) and the width direction (direction of arrow b) of the housing 1. Figure 2 , only a portion of the housing 1 (bottom surface 3) is shown.

[0044] like Figure 2 As shown in FIG. 1 , a plurality of receiving portions 4 are provided in a manner spaced apart from each other. Figure 2 As shown, the plurality of accommodating portions 4 are arranged in a staggered manner. In addition, the first accommodating portions 5 (which will be described in detail later) contained in the plurality of accommodating portions 4 are also arranged in a staggered manner, and the second accommodating portions 6 (which will be described in detail later) contained in the plurality of accommodating portions 4 are also arranged in a staggered manner.

[0045] Next, use Figure 3-Figure 5 The structure of the housing portion 4 will be described. Figure 3It is a top view and AA cross-sectional view of the housing portion 4 when no battery cell is housed. Figure 4 It is a plan view and an AA cross-sectional view of the housing portion 4 when a small-sized battery cell is housed. Figure 5 It is a top view and AA cross-sectional view of the housing portion 4 when a large-sized battery cell is housed. Figure 3-Figure 5 In the figure, the upper figure is a top view, and the lower figure is an AA cross-sectional view. Figure 3-Figure 5 In the figure, the dotted lines and the dashed lines are virtual lines.

[0046] like Figure 3 As shown, the receiving portion 4 includes a first receiving portion 5 and three second receiving portions 6 .

[0047] The first container 5 is a cylindrical space having a first diameter with O1 as the center, and the second container 6 is a cylindrical space having a second diameter smaller than the first diameter with O2 as the center.

[0048] Furthermore, the housing portion 4 has a shape obtained by partially combining the outer periphery of the first housing portion 5 and the outer periphery of the second housing portion 4 in a plan view (in other words, viewed from the axial direction of the housing portion 6 ).

[0049] By using the above-mentioned shape, two types of battery cells of different sizes can be accommodated in the accommodation portion 4. Figure 4 As shown, a small-sized battery cell 7 (hereinafter referred to as "small cell 7") is accommodated in the second accommodating portion 6. Figure 5 As shown, a large-sized battery cell 8 (hereinafter referred to as a “large cell 8 ”) is accommodated in the first accommodation portion 5 .

[0050] Should be explained, such as Figure 3 As shown, preferably, when viewing the receiving portion 4 from above, the center O2 of the second receiving portion 6 is located further outward than the outer periphery of the first receiving portion 5. Alternatively, the center O2 of the second receiving portion 6 may be located on the outer periphery of the first receiving portion 5. Thus, when viewing the receiving portion 4 from above, the second receiving portion 6 can be formed into an arc with a center angle of at least 180 degrees, thereby improving the holding force for the small unit 7.

[0051] In addition, in this embodiment, the case where there are three second storage parts 6 is described as an example, but the number of second storage parts 6 combined with one first storage part 5 may be at least two or more.

[0052] As described above, the battery cell holder 100 of the present embodiment is characterized in that it has a housing portion 4 for housing a cylindrical battery cell, and the housing portion 4 includes: a first housing portion 5, which is a cylindrical space having a first diameter; and a second housing portion 6, which is a cylindrical space having a second diameter smaller than the first diameter. When viewed from above, the battery cell holder 100 has a shape that is a partial combination of the outer periphery of the first housing portion 5 and the outer periphery of the second housing portion 6.

[0053] This feature allows a single battery cell holder to accommodate multiple types of battery cells. Furthermore, by combining the first and second accommodating portions 5 and 6, the limited area of ​​the bottom surface 3 can be efficiently utilized, allowing for the storage of a greater number of battery cells. Consequently, a battery cell holder with excellent convenience and cost-effectiveness can be provided.

[0054] Although not shown in the figure, the battery module of this embodiment includes the aforementioned battery cell holder 100 and is implemented by accommodating a plurality of battery cells (small cells 7 or large cells 8) in the battery cell holder 100. The accommodated plurality of battery cells are connected in series or in parallel, and the capacity and voltage are adjusted to predetermined values ​​before use.

[0055] Although not shown in the figure, the battery pack of this embodiment is implemented by including the above-mentioned battery modules. In addition to the above-mentioned battery modules, the battery pack also includes, for example, a battery management system for monitoring voltage and temperature, a charge and discharge circuit, and a cooling mechanism.

[0056] It should be noted that the present disclosure is not limited to the description of the above-mentioned embodiment, and various modifications can be made without departing from the spirit of the present disclosure.

[0057] [Variation 1]

[0058] In the embodiment, the plurality of accommodating portions 4 are spaced apart from each other (see Figure 2 ) is used as an example, but is not limited thereto. For example, Figure 6 As shown in the housing portion 4a, two housing portions 4 are combined and provided.

[0059] [Variation 2]

[0060] In the embodiment, the case where the depth (axial length) of the first receiving portion 5 is the same as the depth (axial length) of the second receiving portion 6 is described as an example, but the present invention is not limited thereto. For example, the depth of the first receiving portion 5 may be deeper than the depth of the second receiving portion 6. In this case, Figure 7-Figure 9 Provide explanation. Figure 7-Figure 9 and Figure 3-Figure 5 The same is a top view and an AA cross-sectional view of the accommodation portion 4.

[0061] like Figure 7 As shown, the depth D1 of the first receiving portion 5 is deeper (longer) than the depth D2 of the second receiving portion 6. Figure 8 As shown, the second receiving portion 6 receives the small unit 7, as shown in FIG. Figure 9 As shown, the first receiving portion 5 receives a macromonomer 8 .

[0062] according to Figure 8 、 Figure 9 It can be seen that in this modification, the axial length of the large monomer 8 is longer than the axial length of the small monomer 7 (in other words, the height of the large monomer 8 is higher than the height of the small monomer 7). Figure 8 、 Figure 9 As shown, the small unit 7 and the large unit 8 are housed so as not to protrude from the upper surface of the housing portion 4. That is, in this modification, even if the small unit 7 and the large unit 8 have different axial lengths, the small unit 7 and the large unit 8 can be housed so as not to protrude from the upper surface of the housing portion 4.

[0063] Furthermore, in this modified example, the holding force is enhanced in the lower portion of the first accommodation portion 5 (the portion deeper than the second accommodation portion 6 ).

[0064] [Variation 3]

[0065] In the embodiment, the case where the housing portion 4 is a combination of three second housing portions 6 and one first housing portion 5 is described as an example, but the present invention is not limited thereto. Figure 10-12 The housing portion 9 having a shape obtained by combining seven second housing portions 6 and one first housing portion 5 will be described. Figure 10-12 and Figure 3-Figure 5 The same is a top view and an AA cross-sectional view of the accommodation portion 9.

[0066] like Figure 10 As shown in the top view, the accommodation portion 9 is a shape in which six second accommodation portions 6 are combined in the outer peripheral portion of the first accommodation portion 5 and one second accommodation portion 6 is combined in the central portion of the first accommodation portion 5.

[0067] In addition, if Figure 10 As shown in the AA cross-sectional view of FIG, in the housing portion 9, the depth D2 of the second housing portion 6 is deeper (longer) than the depth D1 of the first housing portion 5. Figure 11 As shown, the second receiving portion 6 receives the small unit 7, as shown in FIG. Figure 12 As shown, the first receiving portion 5 receives a macromonomer 8 .

[0068] The above-mentioned multiple receiving portions 9 can be provided on the bottom surface 3 of the housing 1 at intervals from each other, or, as shown in FIG. Figure 13As shown in FIG. 1 , a plurality of accommodating portions 9 are combined with each other to provide. Figure 13 As shown, a plurality of accommodation portions 9 (including the first accommodation portions 5 and the second accommodation portions 6 ) may also be arranged alternately with each other.

[0069] [Variation 4]

[0070] In this embodiment, the battery cell is described as cylindrical, but the present invention is not limited thereto and may be prismatic. In this case, the first and second accommodating portions 5 and 6 are also prismatic.

[0071] Industrial Applicability

[0072] The battery cell holder of the present disclosure is useful for technologies that accommodate multiple battery cells.

Claims

1. A battery cell holder having a receiving portion for receiving a columnar battery cell, characterized in that: The accommodating portion includes: a first receiving portion, which is a cylindrical space having a first diameter; and a second receiving portion, which is a cylindrical space having a second diameter smaller than the first diameter; The battery cell holder has a shape formed by partially combining the outer periphery of the first accommodation portion and the outer periphery of the second accommodation portion in a plan view.

2. The battery cell bracket according to claim 1, wherein: In a plan view, the center of the second accommodation portion is located on the outer periphery of the first accommodation portion or outside the outer periphery.

3. The battery cell bracket according to claim 1, wherein: In a plan view, at least two or more of the second accommodation portions are combined with one of the first accommodation portions.

4. The battery cell bracket according to claim 1, wherein: A plurality of the accommodating portions are provided, In a plan view, the first accommodation portions included in the plurality of accommodation portions are arranged alternately with each other, and the second accommodation portions included in the plurality of accommodation portions are arranged alternately with each other.

5. The battery cell bracket according to claim 1, wherein: The first accommodation portion has a depth greater than that of the second accommodation portion.

6. A battery module, characterized in that: A battery cell holder according to any one of claims 1 to 5.

7. A battery pack, characterized in that: A battery module according to claim 6.

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